Hironobu Iwabuchi received the Doctor of Science degree in geophysics from the Graduate School of Science, Tohoku University, Sendai, Japan, in 2001. From 2002 to 2010, he worked as a Research Scientist with the Frontier Research System for Global Change and the Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan, and the Department of Atmospheric Sciences, Texas A&M University, College Station, TX, USA. Since 2011, he has been a Tenured Associate Professor with the Graduate School of Science, Tohoku University. His current research interests are on modeling of atmospheric radiative transfer, remote sensing of clouds and roles of atmospheric particles in the Earths climate system. The researches are conducted in his group and in collaboration with domestic and international research groups.